/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef __COMMON_HOST_CONNECTION_H
#define __COMMON_HOST_CONNECTION_H

#include "IOStream.h"
#include "renderControl_enc.h"
#include "ChecksumCalculator.h"

class GLEncoder;
class gl_client_context_t;
class GL2Encoder;
class gl2_client_context_t;

class HostConnection {
public:
    static HostConnection* get();
    ~HostConnection();

    GLEncoder* glEncoder();
    GL2Encoder* gl2Encoder();
    renderControl_encoder_context_t* rcEncoder();
    ChecksumCalculator* checksumHelper() {
        return &m_checksumHelper;
    }

    void flush() {
        if (m_stream) {
            m_stream->flush();
        }
    }

private:
    HostConnection();
    static gl_client_context_t* s_getGLContext();
    static gl2_client_context_t* s_getGL2Context();
    // setProtocol initilizes GL communication protocol for checksums
    // should be called when m_rcEnc is created
    void setChecksumHelper(renderControl_encoder_context_t *rcEnc);

private:
    IOStream *m_stream;
    GLEncoder *m_glEnc;
    GL2Encoder *m_gl2Enc;
    renderControl_encoder_context_t *m_rcEnc;
    ChecksumCalculator m_checksumHelper;
};

#endif
